Spring Cloud Consul配置Metadata_consul metadata

需求

实例注册到Consul时能够携带Metadata，这样其它实例就能够直接从Consul上获取该实例的Metadata信息。

调查

Spring Cloud Consul官方文档是这样说的：

Consul does not yet support metadata on services. Spring Cloud’s ServiceInstance has a Map<String, String> metadata field. Spring Cloud Consul uses Consul tags to approximate metadata until Consul officially supports metadata. Tags with the form key=value will be split and used as a Map key and value respectively. Tags without the equal = sign, will be used as both the key and value.

翻译下：

注册到Consul中的服务还不支持Metadata。Spring Cloud的ServiceInstance类中包含一个名为metadata，类型为Map<String, String>。在Consul没有官方支持medata之前，Spring Cloud Consul可以用Consul的tag